Potent polls

Changes events to hot-only and uses Polls as the main type on which the framework is based.

Bye-bye bower

Gets rid of unnecessary bower.json file.

Mighty merge

Uses merge instead of oneOf.

Outstanding optimizations

Uses the new Event optimizations to speed up internal subscriptions.

Powerful polymorphism

Uses row polymorphism in more places for greater flexibility.

Simplified signatures

Uses a simplified signature for Event.

Sneaky ST

Updates several unsafe code paths to use ST instead of a random monad.

Venerable vbus

Changes the type signature of vbus to something nicer.

Pursuing purity

No more bang. What's bang? I don't know. It never existed. Right? Right. Nor did this commit message that refers to it. Just pure. Pure. Pure. Pure. Pure. Pure. Pure. Pure. Pure.

Sensational scope

Simplifies the bolson API by making fixed and envy aliases for dyn. We can bring them back as separate ADT types at a certain point if optimizations are needed. The main reason for this was to work off of dyn while making subtle changes instead of having to copy/paste them to several branches.